Economy Comfort seats feature three to four inches of additional leg room across Delta’s fleet of two-class aircraft as well as giving passengers priority boarding.

The price for the economy class upgraded seats varies by destination, but range from $9 to $99 per segment on flights within North America and to/from Mexico, Central America and the Caribbean, according to Delta. And on all other Delta flights from $40-$180.

On long-haul international flights, they also have up to 50 percent more recline than standard economy class seats and customers get complimentary beer, wine and cocktails as extra perks.

The Economy Comfort seat upgrade product is available on all mainline aircraft and more than 250 two-class regional jets, Delta said.

The new program is an extension of the airline’s Even More Legroom product that was launched in 2008. The Even More Space fee will vary, but will start as low as $10 for short-haul flights, JetBlue said in a statement.

The extra legroom seats available in the new Even More Space offer are located in rows 1-5 and emergency exit rows 10 and 11 on the A320, and in row 1 and the emergency row 12 of the Embraer E190.

Courtesy of JetBlue.com

Initially customers who opt for the Even More Space option will also receive access to Even More Speed expedited security clearance in 15 JetBlue markets.

Those markets include Fort Lauderdale and Jacksonville, Fla.; Las Vegas; Los Angeles and San Francisco; New York (JFK) and Washington D.C. More markets are expected to be added in coming months.

Fliers not opting to purchase this extra service will still be able to enjoy amenities such as a free first-checked bag and on-board snacks at no extra cost, JetBlue said.